how do i get mIRC not to evaluate "$network" and etc in this code?

Code:
  write -c $servdoci <?php
  write $servdoci $network = %network $+ ;
  write $servdoci $total.users = %server.users $+ ;
  write $servdoci $server.lobbey = %server.lobbey $+ ;
  write $servdoci $lobb.users = $lobbb.userz $+ ;
  write $servdoci $serv.map = $srrrv.map $+ ;
  write $servdoci $srv.fgen = %fgen $+ ;
  write $servdoci ?>
  inc %fgen